Apparatus for making fiber board



May 28, 1929. w. M.'SHOEMAKER, JR

APPARATUS FOR MAKING FIBER BQARD Original Filed Aug. 13, 1927 3Sheets-Sheet a Q 1 nu O 0 y 28, 1929- w. M. SHOEMAKER, JR 4,641

APPARATUS FOR MAKING FIBER BOARD Original Filed Aug. 13, 1927 -3 sh t-sh t 2 y 1929- w. M. SHOEMAKER, JR 1, 14,641

APPARATUS FOR MAKING FIBER BOARD Original Filed Aug. 15, 1927 3 Sh ts-sht 5 I departing from Patented Ma '2 1929.

WILLIAM ufsnomuaxnn, m KENNETH. saunas, rnnnsmanm, assrenon 'r oNATIONAL VULCANIZED FIB P ORATION OF DELAWARE;

an oomarnr, or wmiime'ron', minawnnn, A com.

APPARATUS son mine FIBER-Bomb.

Original applicatiohfiled-Augnst 13, 1927,.Serlal'No.

y invention relates to apparatus for rank ing-fiber board. In themanufacture of fiber board,-sheets of unsized and. unloaded paperconsisting. usually of cotton celluloseare employed. A

plurality of sheets may be employed and united, or a singlesheet may beemployed and wound about a drum a suflicient num ber of' timestogproduce the thickness of 10 board desired," or the completed boardmay consist 'of a'sheet otsingle thickness cured in known manner. suchmanufacture the cellulose she ets'are firstsubjected to the -ac-- tionof-a suitable chemical, for example,

' zinc chloride in solution, which is quite generally employed. After'having been thus treated, the'sheets are subjected to heat and pressure,whereby, if a plurality of sheets fare employed, union thereofisefiected; or,- if a single sheet is w'ound'abou'ta drum, as abovesuggested, union of the overlying plies is eflec-ted." 1 a I Thegeneralobject of the-invention is to provide a novel constructionofapparatus. whereby. the cellulose sheets, after having been subjected tothe 'action of a chemical :in solution, may be conveyed to the pressuremeans without the 'necessity'of bending the same to such an extent as toform sharp angles therein, andalso without. the neces- 'sity ofsubjecting the same to unnecessary stretchingitension; also to provideav means for applying heat uniformly to both sides 'ofa sheetprplurality of sheets of cellulosic material which -may be-united to formfiber board or fiber sheet having improved structural characteristics. vs To the foregoing and other'ends my in 'vention .comprehends theconstruction. of apparatus as disclosedand described herein and asparticularly pointed out in-the claims. I w 1 f m It will'be understoodthat my invention is susceptible ,ofembodimenfin other-forms ofapparatus than that disclosed herein and that changes in theconstructionmay be made within the scope of the claims without he said invention or'the princi lethereofi. 3

Int ejdrawingsz. A 1 Fig. 1 is-a view partly in side elevation as, saa.Serial Roi-250,121.

showing more 212,658. mm and 1:

and partly in longitudinal sectional .elevationof a portion of theapparatus in which the invention is embodied; L x i Fig. 2 isalongitudinal sectional elevation of the remaining portion of themachine; Fig. 3 is a transverse sectional view taken on the line 33 ofFig. 2; Fig. 4 is'a' longitudinal sectional view sim=' ilar to thatshownin Fig. 2 but showinga modification of the structure; and

Fig. 5 is a transverse sectional view of l a fragmentary portion of thestructure clear-1y a detail 'of the constructioni I It will beunderstood that if Figs. 1 and 2 be so placed in'relation to eachotherthat thedot and dash lines A --B overlie each other, an illustration ofthe complete, machine will be obtained.

In the drawings I have shown a plurality I of rolls =1 of paperwhich'are mounted upon rotatable shafts. 2, which are mounted at f theiropposite endsin "bearings supported upon the oppositeside members 3 ofthe frame structure comprising uprights 4. L p The sheets of paper 5which are drawn from the rolls 1 over guides 6, are mounted, one abovethe other, upon the frame structure of the apparatus. Fromthe guides 6-0 the sheets 5 extend downwardly. and are guided through a body of asuitable liquid solvent 7, usually water,.containingfasuit, ablechemical in solution, for example,-zinc' chloride, which solutionusually, is of a x strength or density ;of approximately 70. degreesBaum. The liquid solution is contained in a receptacle 8 of'usua'lconstru'ction. The sheets 5 are guidedthrough the solution"?underneath guide rods 9, whichv are supported attheiropposite endsin-the opposite sides of A-shaped frames 10, only?" one-of which isshown. These frames are suspended within the receptacle or container Sby means of parallel links 11, which 5 links are adapted to erpivotally.operated bymeans of handles or levers 12 to elevate the said frames.together with therods car?" ried thereby to positions outside of the receptacle or conta1ner'8 and to lower. the same 1; thereinto. The saidvframes are moved [into elevated position for the more convenientthreading of the sheets underneath the guide rods 9, previously referredFor convenience in effecting the elevation and indicated.

From .the guide rods 9 the sheets are conveyed rorwardly to and overguide rods supported upon. the frame 'structure of the machine and fromthe latter they extend in a slightlydownward direction under neathhorizontally arranged tubes mountthe plane in which the rods -Each sheetextends under a tube as shown.

end by means ed ina plane substantially parallel .with

Each of these tubes is connected at one pipe 21 with end' of whichisconnected one end .ofa liquid in small streams. The openings are soplace in the said tubes or pipes 20 that the small;

liquid supply pipe 23. The'lower end of the latter pipe is connected tothe discharge side of a suitable pump 24, the opposite side of which isin communication with a tank 25 containing a liquid26 which is adaptedto be heated by a steam coil 27-. The supply of liquid to the tubes 20is adapted -to be controlled by. valves 28. The upper end of themauifoldpipe 22 is provi ed with an uplwardly pro ecting tubularextension 30 w pipe 31 which is adapted to discharge the overflow liquidinto a receiving tank orireceptacle 32. The height fold pipe 22 is suchas to provide in the latter a suflicient :head to-exertvpressure in thetubes 20 to effect the discharge of the therefrom through the openings35 streams of liquid issue therefrom at angles I of about degrees tohorizontal planes.

. underneath said tubes.

"l p y against the under sides 0 Pparent from an in-' I will be noted.

Thestreams of liquid which issuefrom the respective tubes or pipes 20descend upon the top sides of the sheets which are guided The streamswhich issue from the intermediate tubes are .pro-

the sheets as will spection of the drawings. that the lowermost of t epipes 20 is located underneath the owerniost of the sheets 5, which areguided underneath series of tubes. or

the said tubes, and its purpose is to provide means for'projectin'g.streams of theliquid against the under side of the lowermost sheet. A'valve controlled pipe 40 is connected at one end of the pipe 23, theoppo:

site outer end "thereof terminating in the receptacle or tank 32.-Plates 41 are pro of-sheets 5 in adjoining relation to theoposite endsof the series of tubes or pipes 20 dr the purpose of guiding 4 maysplash or escapeoutwardly from the opheating coil 27 15 are mounted.streams of liquid discharged from the tubes of a short branch connectinga manifold '22 to thelower.

of the tubular-ex tension 30 above the upper end .ofthe mad-- the liquidwhichthrough a pipe 42 to the receptacle 25 reviously or catchingtheliquid which may escape from thesheets 5 I have provided a, receptacle45 from whichthe liquid maybe discharged throughan outlet 46' intothereceptacle or tank 25.

25 is heated, as above stated, by means ofa to a temperature such thatthe or pipes 20 onto and agalnst the upper and of the sheets intothereceptacle referred to. As a further" means The liquid 26 withinthereceptacle or tank .receptacle. or tank 32 is conveyed therefrom. I

lower sidesof the sheets 5 will impart theresaid sheets at a temperaturewhich may range about 38 degrees centigrade to about 93 de- Any suitableliquid may be employed, but that which grees centigrade.

at present is preferred'by me is one containing a solution of zincchloride, thesamw as: thatemployed 'in the receptacle or tank B for theInitial treatment of the sheets. After the sheets have been in the.manner heated by the application .of the heated liquid thereto,

ich. is 1n communication with an overflow :heretoforedescribed,they areconducted in to the requisite temperature suitable to be employed inthemanufacture of fiber boards convergent relation to eachother, as shown,and are -brought together upon the upper side of the upper cylinder ordrum of the co-actingor co-operating pressure drums or cylinders 50 and51. These cylinders or drums preferably 'shouldbe heated. The

overlying sheets extend around the outer half portionof the cylinder ordrum 50 and are subjected thereby to a pressure requisite for effectingunion thereof to produce the product, namely, fiber board or vulcanizedfiber; After havingbe en thus united the sheet is cut into desiredlengths, washed' and. other-vgisetreated in the usual known manner.

d are carried.betweenthedrums'50 and- 51 and" "Instead of conducting thesheets 5 fromf the guide rods 15; downwardly through a. body of liquidcontaining a suitable chemical in' solution as shown tion containing-thechemical, for example, zinc chloride, is 'supplied'by means of a pipe 63having connection atitslower end to the I in a plane substantiallyparal-- L pipes61' to a manifold discharge side of a suitable pump '64,the

opposite side of which is {communication a; receptacle 65 containing thesolution with 66. Any suitable liquid solvent and anysuitable chemicalmay be employed but usually water is employed as the solventand zincChloride as the chemical. The solution gen'erally is employed at astrength or density of about 70 degrees .Baum and at ordinary roomtemperature but the temperature may range from room temperature to atemperature of approximately degrees centigrade. The supply of liquidsolution to the pipes 60 is controlled by valves, not,shown,"-

which are identical with the; valves 28, to.

which reference has been previously made.

for controlling the admissionor supply of solutionto the pipes 20.

The upper end of the manifoldv pipe 62 is provided with anupwardl-yprojecting tubular extension '67 having connection at its upper end to a'waste'pipe 68,-.which is adapted to discharge anyover-flow of thesolution into a, receiving receptacle or tank 69. I A.

valve controlled pipe 70 is connected at one end to the pipe 63, theopposite end thereof terminating within-the receptacle or tank 69. -Thetubes 60'are provided with openings 71 (like the openings 35 in'thetubes 20) which are adapted to discharge the solution v onto and againstthe upper and lower sides of the sheets 5 in the same manner as has beendescribed in connection with the said tubes 20.

In order that any liquid which may escape from the opposite. sides oredges of the portions of the sheets 5 i'n adjoining relation shown.

to the op'osite ends of the tubes 60 maybe directed into the receptacleor tank 69 I have provided plates 72, only one of which" is n willbe'noted thatfin the as-.1 a construction as illustrated in Fi 4 thesheets 5 are bent but slightly in 1; (air passage from the guides 6underneath the tubes or pipes 60 to=the tubes "or pipes 20. By thusavoiding the bending of the sheets the pulling tension necessary to the;drawing of the sheets through the apparatus is de-- creased wherebyliability of the cracking or breaking of the sheets is decreased;

In order to prevent waste of the solution which may escape from theportions of the sheets 5 which are located over the gap between eitherthe tank or receptacle 8 or.69 and the tank or rece tacle 32 I haveprovided a bridging plate 3, the opposite ends of which are flanged, asindicate It will be seen that by my invention I have providedanapparatus ofnovel and relatively simple construction which may beemployed to great advantage in the inanu facture of fiber board. I

This application is a division of my aptates filed August 13, 1927,Serial No.

I lication for Letters Patent'of the United 12,658, and covers subjectmatter disclosed in the said application.

.'against the said sheets.

, Having thus described my inve ntion, what I claim and desire to secureby Letters Patent is:

1. In apparatus-of 'thecharacter described,

the combination of means -for-the application of a liquid containing asuitable chemi- I, goal in solution to each of a plurality of sheets ofcellulose pap'er,-a plurality of tubes upported in parallel relation toeach o't er,

which tubes are provided with openings for the discharge of a fluidtherefrom,imeans for-" supplying fluid under pressure to the saidtubes,vand -means'jor heating said fluid and means for thereafter effectingunion of said sheets. I I 2.1 1 apparatus of the character described,

the combination of means for effecting the sheet of cellulose'p'aper thesaid liquid beapplication of a liquid containing a suita ble chemical insolution to bothsideaof a a Q ing at a temperature which may rangefromroom temperature to a temperature of apsuitable heated fluid againstboth sides of said -sheets,thie temperature of'said streams beingsuchasto heatthe said sheets'to-a proximately 35' degrees centigrade, meansi "for discharging and; directing streams of a temperature requisite inthe manufacture of heating the liquid previous to its dischargefiberboard ,or vulcanized fiber, and means for 3. Inapparatus of thecharacter described,

,thecombinatio'n of aplurality of series of tubes, the tubes of eachseries being arranged'in parallel relation with each other and eachtubebein providediwith openings to permit the disc arge. of'a liquidthere-- -from, means for conducting a plurality of I sheets of paperunderneath the said tubes,

the said sheets passing first under the tubes of the other series, meansfor supplying un- 10.5 of one series and thereafter'under the tubesderpressure a liquid containing a suitable 7 chemical in solution to thetubes of the first series/which liquid is discharged through theopenings of the said tubesagainst bothsides of each sheet of paper,means for supplying heated liquid of suitable character under pressureto the tubes of the second named series which is discharged through the0, en-

of paper, the temperature of said liquid be.-

ing such as to heat the said sheets to a temperings therein against bothsides oteach 's eet ature requisite in the manufacture of fiber board orvulcanized fiber, and means f0r'\12c thereafter efi'ecting union of saidsheets.

4. In apparatus of the character described,

the combination of a plurality of series of spaced relation to. eachother an being prothevtubes in each series, a series ofguide thecombination of a support for rotatably adapted to be discharged, meansfor conduct ing a plurality of sheets of paper underneath rods forguiding the said paper sheets to an adjoining. series oi tubes, the saidguide rods and the plurality of series of tubes being 1 located .insubstantially the same horizontal plane, means for supplyin liquid tothe said tubes from which it 1s ischarged against said sheets, and meansfor applying heat and pressure to the said sheets after. they. havepassed from the last of,the said series of.

tubes to effect union thereof v 7 L 5;, In apparatus of the characterescribed,

the combination of a series of tubes supported ina planeforming an acuteangle A with the horizontal plane which tubes are.

provided with openings from whicha liquid under pressure is adapted tobe discharged,

, means for supplying "saidliquld under pressure to said tubes, meansfor conductingcellulose sheets between the said tubes the saidme'ansincluding a'series of guide rods supported 1n parallel relationvto the said tubes, means for applying a chemical insolutionto the saidsheets in advance of the ing heat and pressure ,to the said sheet after5 l the application of liquid thereto, the said,

last mentioned means being located in prac- 45 tically the samehorizontal lane as that of the tubes and the guide ro whereby in itspassage through the said apparatus the sheet is subjected to minimumbending.

. In testimony that I claim the foregoing as 50 mj invention. 'I havehereunto signed my name this 24th day ofJanuary, A.- D. 1928.

v wiLIIiAM' M. SHOEMAKER,; JR.

